Meanwhile, being inside is akin to being jammed in a Volkswagen Beetle with two other people. We try to keep a dive to 10 hours, which is definitely a long time considering there’s no bathroom. When I’m down there, though, I’m so involved in the science and the energy and the fact that we’re exploring the seafloor that I basically forget I have bodily functions at all. I’m not hungry or thirsty either—I’m just completely absorbed in my work. It takes an hour or two to journey back up to the surface, which is when I really start to notice those things again.